Weight
- Each part–
- Area–
- Thickness used–
- Weight per square foot–
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Weight is volume times density. The calculator works out the area of your shape, multiplies it by the thickness to get the volume, and multiplies that by the density of acrylic, 1.19 g/cm³ (about 0.043 lb per cubic inch).
- Rectangle: area = width × height.
- Circle: area = π × diameter² ÷ 4.
- Ring: area = π × (outside diameter² − inside diameter²) ÷ 4.
For example, a 24 × 48 in. panel of 1/4 in. acrylic is 8 sq ft. At 6 mm (0.236 in.) thick, that's 272 cubic inches, or 4,460 cm³, which weighs about 5,300 g: 11.7 lb (5.3 kg).
Most acrylic is made to metric thicknesses and sold under the nearest inch fraction, so we use the metric size for each nominal thickness. Real sheet varies, cast sheet by as much as 10% either way, so treat the result as a close estimate rather than a scale reading. Read more about why acrylic is thinner than its label. Shipping weight will be a little higher once packaging is added.
Acrylic weight per square foot
Worked out with the same formula. A full 48 × 96 in. sheet is 32 sq ft.
| Sold as | Made as | Per sq ft | Per m² | Full 4 × 8 ft sheet |
|---|---|---|---|---|
| 1/16 in. | 1.5 mm (0.059 in.) | 0.37 lb | 1.78 kg | 11.7 lb |
| 1/8 in. | 3 mm (0.118 in.) | 0.73 lb | 3.57 kg | 23.4 lb |
| 3/16 in. | 4.5 mm (0.177 in.) | 1.10 lb | 5.35 kg | 35.1 lb |
| 1/4 in. | 6 mm (0.236 in.) | 1.46 lb | 7.14 kg | 46.8 lb |
| 3/8 in. | 9 mm (0.354 in.) | 2.19 lb | 10.71 kg | 70.2 lb |
| 1/2 in. | 12 mm (0.472 in.) | 2.92 lb | 14.28 kg | 93.6 lb |
| 3/4 in. | 18 mm (0.709 in.) | 4.39 lb | 21.42 kg | 140.4 lb |
| 1 in. | 24 mm (0.945 in.) | 5.85 lb | 28.56 kg | 187.2 lb |
Acrylic is about half the weight of glass of the same thickness, which is one reason it's used for large frames, cabinet doors, and hanging signs. For more detail, see acrylic weight per square foot and acrylic vs glass. If you're planning a shelf, check it in the shelf sag calculator too.
Questions about acrylic weight
Is acrylic lighter than glass?
Yes. Acrylic weighs about 1.19 g/cm³ and ordinary glass about 2.5 g/cm³, so an acrylic panel weighs a little under half as much as the same size and thickness in glass.
How much does a 4 × 8 sheet of acrylic weigh?
A 48 × 96 in. sheet of 1/4 in. (6 mm) acrylic weighs about 47 lb (21 kg). A 1/8 in. sheet is about 23 lb, and a 1/2 in. sheet about 94 lb.
Do cast and extruded acrylic weigh the same?
They have the same density, so a part of the same size weighs the same. Cast sheet varies more in thickness, so two cast parts can differ by a few percent. Cast vs extruded acrylic